[PATCH] D50941: [DAGCombiner] unwrap truncated subtraction operand for rol generation in matchRotateSub

[Sanjay Patel via Phabricator via llvm-commits]

spatel added a comment.

The motivating cases seen in the regression tests here and PR15880 and PR32023 ( https://bugs.llvm.org/show_bug.cgi?id=32023 ) were fixed more generally with rL348706 <https://reviews.llvm.org/rL348706>, so I think this can be abandoned.


Repository:
  rL LLVM

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  https://reviews.llvm.org/D50941/new/

https://reviews.llvm.org/D50941